Machine-tool.



A. My SOSA.

MACHINE TOOL. APPLICATION man mm 16. my.

' Pmmt efl Den. 4, 1917.

3.6 Mal-muses,

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@MP'WI-sOSzx. lmfqnkov citizen of the United time swan PNT oic.

AUGUST M. SOSA, OF CINCINNATI, OHIO, ASSIGNOB "130 THE -AMEIBJIGAN TOOL WORKS COMPANY, OF CINCINNATI, 01-110, A CORPORATION OF WEST VIRGINIA.

MACHINE-TOOL. V

To all whom it may concern."

Be it known that T, Auoosr M. SOSA, a States, residing at Cincin' 'i'ati, Ohio, have invented a new and useful Improvement in Machine Tools, of which the following is a specification.

My invention relates to machine tools of the metal turning class, my improvements are to provide a series of automatic sto s for the cross head with the cutting tools inpredetermined adjusted positions for duplicating in quantities the different diameters of successive sections of a given sp dle; to provide the stops with micrometer ad ustments for secur1ngtherequired accuracy of the cutting position of the cutting tools; to provide means for se lectively reversing the position of the stops to apply to the corresponding front and rear tool; to provide means for disconnecting the stop mechanism from its actuating connec tions that the machine tool may be used for other purposes, and to provide simple and cross slide showing showing the mechanism splined durable construction and assemblage of the coacting members for securing facility of operationwith accuracy, speed and efliciency of action. These objects together with others to be presented in the claims may be attained in the following described manner,

as illustrated in the accompanying drawings, in which:, j I Figure 1 is a plan with parts in section of ortions of an engine lathe embodying ,I'ny improvements; Fig. 2 affront elevation of portions of the carriage and-crossslide; F g.

3 a rear. side elevation of the carriageand the drum for actuating thecross slide stops; Fig. 41 an enlarged plan of the stop mechanism; Figsr5 and 6 aplan' and a vertical sectionrespectively of details for adjusting the disk on its shaft; Fig. 7 a front elevation ofreversed superposed blocks in operative position in relation to the disk, and

. V Fig; 8. a front elevationof portions of the stop mechanism in operative, position for limiting the forward movement of the cross shead wi h he rear'cutting tool.

.- Tnthe drawings, 1 represents portions of 1 the bed of ,an ,engiilef lathe, 2111c carriage, 3'

. he-.apr0n dep nding march-0,111.45the ;csiai .pmv esevitteitti s e s at at:

Specification of Letters Patent.

and the objects of shown in Fig. 8. g n V 2 are placedalternately in rearward position t e a ieltlat f l Patented Dec. i, ieir.

Application filed at. 1c, 1917. sriai No. 175,188.

. ably adjustable on the carriage by means of ,the cross-feed screw 6, all being constructed and arranged in the ordinary manner.

The screw 6 is journaled in the casing 7 which is secured on the front end of the carriage and the pinion 8 splined thereon engages with the gear 9 which is loose on the fixed stud 11. The smaller gear 12 loose on said stud is arranged to turn in unison with gear 9 and the shaft 13 journaled in the casing 7 is provided with the gear '14: in engagement therewith. The disk 15 splined on said shaft is formed with a series of peripheral lugs 16. The shaft 17 ournaled in the rear side of the carriage and in the front wall of the casing is provided with the drum or cylinder18 parallel with the cross-slide and whichis formed with the high pitch helical groove 19 in its face.

The bracket 21 removably secured on the cross-slide forms a bearing wherein the pin 22 is journaled and which pin may be formed either with an enlarged cylindrical head or provided with a loose anti-friction roller 23 in continuous movable engagementwith the groove in the drum, for rotatively adjusting the drum with its shaft 17 by the movement of the cross slide under the action of the feed screw.

A series of clamp blocks 24 superposed on shaft 17 may .be independently adjusted thereon to any desired rotative position and secured by means of the corresponding clamping screws 25. Stop pins 26 adjustably threaded in the respective blocks 24 project with their blank ends therefrom in a direction parallel with the tangent of the shaft 17 for engaging with one of the lugs 16 on the disk 15, as shown in Fig. 7, to limit the rearward movement of the crossslide with the front cutting tool in 'predeten mined operative position.

For limiting the forward movement of the cross-slide with the rear cutting tool in desired position, the blocks 24 may be selectively placed on the shaft 17 j with the pins 126 projecting with their blank heads in the opposite direction for engaging with the lug 16 on the disk 15, as

corresponding 1 The hlocksshown in Fig.

v the, block 7 The, top

directly'qver the shaft 13" and with recessed seats 28 directly opposite the corresponding blocks 24. The shifting yoke 29 "fort-he disk is provided with the shank -81 which'extends through the slot and is provided with the spring actuated cap 32' which serves to move the yoke with the disklongitudinally on the shaft 13 into selective i gistration with'the blocks 2st where it may be maintained by the automatic engagement of the cap under the exertion ofthe spring 33 with the corresponding seat 28 din operation, a finished master spindle may teammate, in the lathe in the ordinary manner. The cross-head may then be admake the finishing cut for the desired size 7 the stock.

of the first section of the spindle adjacent to The action of the cross feed screw in: ettec'ting this adjustment is comniun'icated throiiglithe intervening gears to turn the disk shaft with, the spli'i ed disk thereon to a'p'rede'termined rotative position.

The splined' disk may then be moved longitudinallybii its shaft into ifgistration with on'the'fdrum shaft which corresp o'nds with the first section of the spindle.

lheblo ck may cheats ifotatively adjusted with the stop pin therein to contact with the corresponding lug on the disk and securely clamped inyadjustedpositionon its shaft to turnthe' drum with the block, iorzthecontact of its end with the lug on by means of its clamping screw. 35

- .The stop pin, being adjustably threaded in provides a .micrometer adjustment the' jdisk after the block is secured on its 111 a similar manner the adjacent rear cutting tool to the size of theadjafcent sectlon of t he spindle, having first shifted the d sk into registratioii with said block. Inlike manner the successive'blocks withthe stop p ns, andthe disk tl ie tools to the proper size of the successive sections of the master spindle.

The movement of the crossslide act-hates the anti-friction roller :in the helical groove the stop pins into contact the corresponding lug oirthe disk nsior th yok p shownin Fig.2, to indicateithe position of,

as, pr o sly d st and in registration with the desired block. The in the easmay be numbered, as

the dislgtoengage the stop pin corresponding tothe difi'erent sections. of the master sp ndle. The use of fsless op' erator this device prevents the from injuringthe stock by a wrongfadju stmentof the cutting tool and rapida'nd accurate duplicameans of the feed screw with the w front, cutting tool in the proper position to A may be'aajnsted to. l mit the movement of the cross slide with stop at a. dissent States is:

the tool carrier coinprising a. series of indc pei'idently ad us'table stops, means actuated by the movement of the carrier for turning the stops in unison, a coacting' r'otative stop, 'selectivemean's for moving and maintaining said stop in registration with either stop of the series, an adjusting screw for the carrier, and actuating connections therefrom with the latter stop.

l. In a. machine tool the combination with a carriage, a cross-slide thereon and a feed screw for the slide, of a shaft provided with a drum formed with a helical groove, connections from the slide with the groove for turning drum with its shaft, a. series of tangential stops rota'tively adjustable on the shaft, a cooperating stop movable into selective registration with the steps of the series, and gear connections with the feed s'cr'eiv for rotating the latter stop whereby the slide may be limited to predetermined points in its movement.

5. In a inzihine tool a series of l'otatively adjustable stops, automatic means for rotativel'y adjusting said stops in unison, a coacting stop, means for selectively adjusting it nto registration with either stop of the 'ser'1'es,"and automatic means for turning the latter stop at a different 'ratio of speed to intercept the corresponding stop of the seri'e's at a "predetermined point in its r'otative movement. I

6. I In a machine tool a stop mechanism comprising a series of rotatively adjustable stops, a 'coa'etin'g 'rotative stop movable into selective registration with the stops of the series, and separate connections for rotating the series ofjstops in unison and the latter speed and into engagemeat "with "the "Eorie's'ponding "stop "or the Leeann series at a predetermined point in their movement. a

7. In a machine tool a stop mechanism for the tool carrier comprising a series of separately adjustable stops, connections from said carrier for rotating said stops in unison, a coacting stop, means for selectively moving said latter stop into the path of the stops of the series, and connections from the feed screw of the carrier for turning the latter stop into engagement with the corre sponding stop of the series at a predetermined point inv their movement.

8. In a machine tool a stop mechanism for the tool carrier comprising coacting rotative stops, separate actuating connections for moving said stops at different ratios of speed in relation to the movement of the carrier and into engagement with each other at a predetermined point in their movement.

9. In a machine tool a tool carrier, an adjusting screw therefor, a stop mechanism for the carrier comprising a shaft formed with a helical groove, a member movably engaging with the groove and removably secured to the carrier, a series of blocks rotatively adjustable on the shaft, tangential stop pins adjnstably threaded in the blocks, a second shaft, a disk splined thereon and formed with peripheral lugs, means for selectively moving and maintaining said disk in registration with the blocks, and detachable gear connections from the screw for turn ing the latter shaft and the stop with one of the lugs thereon into engagement with the corresponding stop pin for preventing the movement of the carrier in either of 0pposite directions beyond a predetermined point.

10. In a machine tool the combination with a carriage, a cross-slide, an adjusting screw therefor, of coacting adjustable stops, separate detachable connections from the cross-slide and also from the screw for rotatively actuating the respective stops at a different ratio of speed and into engagement for preventing the movement of the slide beyond a predetermined point.

11. The combination with a tool carrier and its feed screw, of relatively adjustable coacting stops, and connections therewith from the respective carrier and screw for turning said stops simultaneously and into mutual engagement.

12. A stop mechanism for a tool carrier, comprising relatively adjustable coacting stops, and automatic means for rotating them at relatively different speeds and into mutual engagement at predetermined points in their rotation.

13. In combination with a tool carrier and its feed screw, of a series of relatively adjustable stops, a stop adapted to be adjustably secured in registration with either of the stops of the series, and connections from the carrier and the screw for automatically rotating the respective series of stops and the separate coacting stop at relatively different speeds with the registering stops into mutual engagement.

A. M. SOSA.

Witnesses R. S. CARR, E. R. GROSSMAN.

copies of this patent may be obtained for live cents each, by addressing the Commissioner of Patents. Washington, D. 0."

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